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Original Articles

Hexagonal tree shaped ultrawideband fractal antenna

ORCID Icon, &
Pages 335-348 | Received 14 Sep 2015, Accepted 26 Jun 2016, Published online: 13 Aug 2016
 

ABSTRACT

A compact hexagonal tree shaped fractal antenna for ultra–wideband (UWB) applications is presented. The bandwidth has been enhanced by using modified feedline and semi-circular ground plane. The impedance bandwidth of 2.5–16 GHz (146%) has been achieved. The proposed second iteration fractal antenna has nearly omnidirectional patterns at its resonance frequencies with an average gain of 4 dB. The simulation and experimental results are found to be in good agreement. The antenna exhibits better reflection coefficient performance along with reduced dimensions as compared to ones reported earlier.

Acknowledgment

Sarthak Singhal and Tushar Goel are very thankful to the Ministry of Human Resources and Development for providing the financial assistance in the form of Teaching Assistantship.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Ministry of Human Resources and Development for providing the financial assistance in the form of Teaching Assistantship.

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